A lot of ppl swear by their Hug A bubs, but I found it too difficult to maneouver around the wrapping. We had a Baby Bjorn which was great when DD was little, but now that she is bigger we have bought an Ergo which is fantastic! I wouldn't have used it when she was littler though as it has this weird tuck-in infant insert which IMO is just too much fluffing around. So I would say the Baby Bjorn for the 12 week old but think about getting an Ergo later on as well.